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Inventory - Schedule of Inventory, Current (Detail) - USD ($)
$ in Thousands
Sep. 30, 2022
Dec. 31, 2021
Dec. 31, 2020
Inventory Disclosure [Abstract]      
Raw material $ 272 $ 231 $ 245
Work in process 127 14 23
Finished goods 104 255 249
Inventory, Net $ 503 $ 500 $ 517